... And he didn't stop travel. Americans and green card holders still were able to travel between the countries.
Wowzers! Trump didn't strand American citizens and Green Card holders in China or some other country! What an A-hole! And if he had, would it have been legal/constitutional?
BTW, what you did not mention is that:
* Those who were allowed to return who came from Hubei Province went into quarantine;
* Those who were allowed to return who came from other parts of China were screened for symptoms, and those with symptoms, whether cold/flu or coronavirus were to go into self-monitored quarantine.
If you're going to post nitpicking (that is a characterization of your post content), at least tell the full story, even if it complicates the nitpicking. And, yes, ignoring historical context and omitting relevant facts is nitpicking (in other words, I am not characterizing the coronavirus as a nit).